PIC32MX270F512L-V/PF - 512KB Flash 40MHz USB MCU | Microchip
料号： PIC32MX270F512L-V/PF ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.89 | $68.90 |
| 100 | $6.21 | $621.00 |
| 500 | $5.65 | $2,825.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC32MX270F512L-V/PF 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile Flash program memory, volatile SRAM, and configurable digital and analog peripherals. The PIC32MX family uses the MIPS M4K 32-bit RISC core with a 5-stage pipeline, occupying the position 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. Compared with 8-bit AVR/PIC16, the PIC32MX delivers multi-MHz 32-bit data paths and USB on-chip, which 8-bit MCUs typically cannot provide.
Key features include USB 2.0 full-speed device/host/OTG with on-chip transceiver, two I2S/SSP audio paths, 81 general-purpose I/O lines, 5 timers/counters, 3 compare/PWM modules, RTCC with calendar mode, and a CTMU (Charge Time Measurement Unit) for capacitive-touch button implementation without external analog ICs. The on-chip 1.5 KB USB endpoint RAM and dedicated DMA to USB simplify Audio Class 1.0 device designs.
Architecturally, the PIC32MX270 integrates a hardware multiplier, single-cycle MAC, prefetch module with cache-like branching optimization, and a peripheral bus running at half the system clock for low-overhead I/O. The 100-pin TQFP package exposes dedicated USB D+/D- pins, multiple ICSP pairs, and ample ADC inputs for mixed-signal designs.
Typical applications include Bluetooth audio sink/source devices using the PIC32 Bluetooth Audio Development Kit (PQAMP), USB headsets, USB MIDI controllers, capacitive-touch user interfaces via CTMU, and low-cost 32-bit general-purpose controllers. The audio-friendly I2S ports and full-speed USB make it a workhorse for prosumer audio products.
Designers should note that the PCI43701 Bluetooth Audio PIM Information Sheet (per the Microchip datasheet 50002314A) is the canonical reference design, and 100-pin TQFP compatibility between PIC32MX170/230/270 L-pin variants is verified for migration between Flash densities. Always place decoupling within 5 mm of every VDD/VSS pin.
This page synthesizes distributor pricing, drop-in alternatives across the PIC32MX family, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： PIC32MX270F512L-V/PF ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX270F512L-V/PF （相同外形与封装尺寸） ——差异在于 ADC, Package, Timers, USB, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC32MX270F512L-50I/PF
✅ 直接替换✓ 有现货
$5.2 / 个
查看数据手册 →PIC32MX270F512LT-V/PF
✅ 直接替换✓ 有现货
$2.1 / 个
查看数据手册 →PIC32MX270F512LT-I/PF
✅ 直接替换✓ 有现货
$5.1 / 个
查看数据手册 →PIC32MX270F512LT-50I/PF
✅ 直接替换✓ 有现货
$6.32 / 个
查看数据手册 →PIC32MX270F512L-I/PF
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX250F256L-V/PF
✅ 直接替换✓ 有现货
$3.4 / 个
查看数据手册 →PIC32MX230F128L-V/PF
✅ 直接替换✓ 有现货
$4.31 / 个
查看数据手册 →PIC32MX270F512L-V/PF 最大额定值与电气特性
| Core Architecture | MIPS32 M4K (32-bit RISC) |
| Core Count | 1 |
| Maximum Core Frequency | 40 MHz (50 MHz for -50 speed grade) |
| Program Memory | 512 KB Flash |
| Data Memory (SRAM) | 64 KB |
| General-Purpose I/O | 81 |
| 封装 | 100-pin TQFP (14x14 mm) |
| 安装类型 | Surface Mount |
| USB Interface | USB 2.0 Full-Speed Device/Host/OTG with on-chip transceiver |
| Audio Interface | I2S / SSP (2 paths) |
| ADC | 10-bit |
| CTMU (Capacitive Touch) | Yes (on-chip) |
| RTCC (Real-Time Clock/Calendar) | Yes |
| Timers / Compare-PWM | 5 timers, 3 compare-PWM |
| 工作温度 | -40C to +105C (extended industrial) |
| Supply Voltage (VDD) | 2.3 V to 3.6 V (per family datasheet) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes (Pb-free) |
PIC32MX270F512L-V/PF 引脚配置
| 引脚 1 | RPB0/RF3/AN0 — Remappable GPIO / AN0 / CTMU input |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | VDD — Core supply 2.3-3.6 V |
| 引脚 12 | RPB5/RD14/AN5 — Remappable GPIO / AN5 |
| 引脚 13 | PGED3/RPB6/RD15/AN6 — ICSP data / GPIO / AN6 |
| 引脚 14 | PGEC3/RPB7/RD16/AN7 — ICSP clock / GPIO / AN7 |
| 引脚 15 | PGED1/RPB8/SDA1/CTED1 — ICSP data / I2C SDA / CTED |
| 引脚 16 | PGEC1/RPB9/SCL1/CTED2 — ICSP clock / I2C SCL / CTED |
| 引脚 17 | VDD — I/O supply 2.3-3.6 V |
| 引脚 18 | AVDD — Analog supply |
| 引脚 19 | AVSS — Analog ground |
| 引脚 20 | AN13/C1IND/RPG6 — Analog input / Remappable GPIO |
| 引脚 21 | AN14/C1INC/RPG7 — Analog input / Remappable GPIO |
| 引脚 22 | AN15/C2IND/RPG8 — Analog input / Remappable GPIO |
| 引脚 23 | AN16/C2INC/RPG9 — Analog input / Remappable GPIO |
| 引脚 24 | VDD — I/O supply |
| 引脚 25 | VSS — Ground |
| 引脚 26 | OSC1/RC12 — Crystal/oscillator input |
| 引脚 27 | OSC2/RC13 — Crystal/oscillator output |
| 引脚 28 | SOSC1/RPC0 — Secondary oscillator / GPIO |
| 引脚 29 | SOSC2/RPC1 — Secondary oscillator / GPIO |
| 引脚 30 | D+/RG2 — USB D+ data |
| 引脚 31 | D-/RG3 — USB D- data |
| 引脚 32 | VBUS/RG5 — USB VBUS detect / GPIO |
| 引脚 33 | VUSB — USB transceiver supply |
| 引脚 34 | VDD — I/O supply |
| 引脚 35 | VSS — Ground |
| 引脚 36 | RPB10/RF4/AN8 — Remappable GPIO / AN8 |
| 引脚 37 | RPB11/RF5/AN9 — Remappable GPIO / AN9 |
| 引脚 38 | PGED2/RPB12/RF6/AN10 — ICSP data / AN10 |
| 引脚 39 | PGEC2/RPB13/RF7/AN11 — ICSP clock / AN11 |
| 引脚 40 | RPB14/RF8/AN12 — Remappable GPIO / AN12 |
| 引脚 41 | RPB15/RF9/AN13 — Remappable GPIO / AN13 |
| 引脚 42 | VDD — I/O supply |
| 引脚 43 | VSS — Ground |
| 引脚 44 | AN17/RPC2 — Analog input / GPIO |
| 引脚 45 | AN18/RPC3 — Analog input / GPIO |
| 引脚 46 | AN19/RPC4 — Analog input / GPIO |
| 引脚 47 | AN20/RPC5 — Analog input / GPIO |
| 引脚 48 | AN21/RPC6 — Analog input / GPIO |
| 引脚 49 | AN22/RPC7 — Analog input / GPIO |
| 引脚 50 | AN23/RPC8 — Analog input / GPIO |
| 引脚 51 | VDD — I/O supply |
| 引脚 52 | VSS — Ground |
| 引脚 53 | RPD0/RTCC/RF0 — RTCC / Remappable GPIO |
| 引脚 54 | RPD1/RF1 — Remappable GPIO |
| 引脚 55 | RPD2/RF2 — Remappable GPIO |
| 引脚 56 | RPD3/OC3/RFD0 — Remappable GPIO / OC3 |
| 引脚 57 | RPD4/OC4/RFD1 — Remappable GPIO / OC4 |
| 引脚 58 | RPD5/OC5/RFD2 — Remappable GPIO / OC5 |
| 引脚 59 | RPD6/RFD3 — Remappable GPIO |
| 引脚 60 | RPD7/RFD4 — Remappable GPIO |
| 引脚 61 | RPD8/RTCC2/RFD5 — Remappable GPIO / RTCC2 |
| 引脚 62 | RPD9/RFD6 — Remappable GPIO |
| 引脚 63 | RPD10/RFD7 — Remappable GPIO |
| 引脚 64 | RPD11/RFD8 — Remappable GPIO |
| 引脚 65 | RPD12/RFD9 — Remappable GPIO |
| 引脚 66 | RPD13/RFD10 — Remappable GPIO |
| 引脚 67 | RPD14/RFD11 — Remappable GPIO |
| 引脚 68 | RPD15/RFD12 — Remappable GPIO |
| 引脚 69 | VDD — I/O supply |
| 引脚 70 | VSS — Ground |
| 引脚 71 | RPE0/PMD0/SDA2 — PMP data / I2C SDA2 |
| 引脚 72 | RPE1/PMD1/SCL2 — PMP data / I2C SCL2 |
| 引脚 73 | RPE2/PMD2 — PMP data |
| 引脚 74 | RPE3/PMD3 — PMP data |
| 引脚 75 | RPE4/PMD4 — PMP data |
| 引脚 76 | RPE5/PMD5 — PMP data |
| 引脚 77 | RPE6/PMD6 — PMP data |
| 引脚 78 | RPE7/PMD7 — PMP data |
| 引脚 79 | RPE8/PMA0 — PMP address |
| 引脚 80 | RPE9/PMA1 — PMP address |
| 引脚 81 | RPE10/PMA2 — PMP address |
| 引脚 82 | RPE11/PMA3 — PMP address |
| 引脚 83 | RPE12/PMA4 — PMP address |
| 引脚 84 | RPE13/PMA5 — PMP address |
| 引脚 85 | RPE14/PMA6 — PMP address |
| 引脚 86 | RPE15/PMA7 — PMP address |
| 引脚 87 | RPF0/PMRD — PMP read strobe |
| 引脚 88 | RPF1/PMWR — PMP write strobe |
| 引脚 89 | RPF2/PMA8 — PMP address |
| 引脚 90 | RPF3/PMA9 — PMP address |
| 引脚 91 | RPF4/PMA10 — PMP address |
| 引脚 92 | RPF5/PMA11 — PMP address |
| 引脚 93 | RPF6/PMA12 — PMP address |
| 引脚 94 | RPF7/PMA13 — PMP address |
| 引脚 95 | RPF8/PMA14 — PMP address |
| 引脚 96 | RPF9/PMA15 — PMP address |
| 引脚 97 | RPF10/U6TX/U3RTS — UART6 TX / GPIO |
| 引脚 98 | RPF11/U6RX/U3CTS — UART6 RX / GPIO |
| 引脚 99 | RPG0/U5TX/PMCS1 — UART5 TX / PMP CS1 |
| 引脚 100 | RPG1/U5RX/PMCS2 — UART5 RX / PMP CS2 |
典型应用
PIC32MX270F512L-V/PF 适用于 6 应用s: Bluetooth Audio Sink/Source Headset, USB MIDI Controller, Capacitive-Touch User Interface Panel, Industrial USB Host Data Logger, USB Audio Class 1.0 Headset, Low-Cost 32-Bit General-Purpose Controller.
Bluetooth Audio Sink/Source Headset
The PIC32MX270F512L-V/PF targets Bluetooth audio sink and source headsets via the Microchip PIC32 Bluetooth Audio Development Kit (document 50002314A). Its two I2S ports handle external codec I2S data while USB OTG enumerates as a USB audio class 1.0 device, with 512 KB Flash supporting full Bluetooth-audio firmware and 64 KB SRAM holding USB + audio sample buffers.
推荐
USB MIDI Controller
USB MIDI controllers using the PIC32MX270F512L-V/PF benefit from on-chip USB device and 81 GPIO for button-matrix scanning and rotary encoders. The 512 KB Flash stores USB-MIDI class descriptors plus user-lighting profiles; the 10-bit ADC reads potentiometers; the 5 timers drive PWM-based LED drivers. Pin-compatibility with PIC32MX170F512L-V/PF lets cost-down designs migrate easily.
推荐
Capacitive-Touch User Interface Panel
The PIC32MX270F512L-V/PF integrates a CTMU (Charge Time Measurement Unit) for capacitive-touch detection without external analog ICs, supporting up to 30+ touch channels via the 81 GPIO matrix. The 100-pin TQFP exposes enough pins for both capacitive touch and a TFT/LCD parallel interface, while 64 KB SRAM buffers gesture-recognition state machines.
推荐
Industrial USB Host Data Logger
The PIC32MX270F512L-V/PF supports USB host mode for USB mass-storage read/write in industrial data loggers, with 512 KB Flash holding FAT32 stacks and 64 KB SRAM acting as a sector cache. The RTCC timestamps cassette to file-headers. Industrial -40C to +105C extended grade (V suffix) handles factory-floor thermal stress.
推荐
USB Audio Class 1.0 Headset
USB Audio Class 1.0 headsets use the PIC32MX270F512L-V/PF as the USB controller streaming 24-bit/s 48 kHz I2S to a DAC, leveraging the integrated USB full-speed with isochronous endpoint and two I2S/SSP ports. The 512 KB Flash fits USB-AudioClass 1.0 descriptors + DSP volume curves, while 64 KB SRAM holds audio sample buffers without stalls.
推荐
Low-Cost 32-Bit General-Purpose Controller
General-purpose 32-bit controllers replace 8-bit AVR/PIC16 designs using the PIC32MX270F512L-V/PF, gaining multi-MHz MIPS data paths while keeping Microchip's MPLAB X toolchain. The 100-pin TQFP footprint offers 81 GPIO - ideal for retrofitting older PIC18 designs. The 10-bit ADC and 5 timers cover most mixed-signal embedded products in this role.
推荐
推荐产品汇总
工程参考数据： PIC32MX270F512L-V/PF ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC32MX270F512L-50I/PF | PIC32MX270F512LT-V/PF | PIC32MX270F512L-I/PF | PIC32MX250F256L-V/PF | PIC32MX230F128L-V/PF |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Flash | 512 KB | 512 KB - same | 512 KB - same | 512 KB - same | 256 KB (-50%) | 128 KB (-75%) |
| SRAM | 64 KB | 64 KB - same | 64 KB - same | 64 KB - same | 32 KB (-50%) | 16 KB (-75%) |
| Maximum Core Frequency | 40 MHz (V grade) | 50 MHz (-50 grade) | 40 MHz - same | 40 MHz - same | 40 MHz - same | 40 MHz - same |
| USB Support | USB 2.0 FS OTG | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same | USB 2.0 FS OTG - same |
| Operating Temperature | -40C to +105C (V extended) | -40C to +85C (I industrial) | -40C to +105C - same | -40C to +85C (I industrial) | -40C to +105C - same | -40C to +105C - same |
| Pin Count (per unit) | 100 | 100 - same | 100 - same | 100 - same | 100 - same | 100 - same |
关键差异点
- USB OTG host mode on a 100-pin 40 MHz MCU （对比 PIC32MX170F512L-V/PF)
- Two simultaneous I2S audio paths （对比 PIC32MX250F256L-V/PF)
- CTMU on-chip capacitive-touch without external analog IC （对比 Generic PIC32MX250F128B (no CTMU))
设计说明
Decouple every VDD/VSS pair within 5 mm of the pin. Place one 0.1 uF ceramic plus one bulk capacitor (4.7-10 uF ceramic) per the four active pairs (pin 11, 17, 24, 34 etc). VUSB (pin 33) needs its own 0.1 uF + 4.7 uF per the USB transceiver supply. AVDD (pin 18) and AVSS (pin 19) require separate filtering for the 10-bit ADC noise target.
Estimated: At 40 MHz MIPS M4K core at 3.3 V the PIC32MX270F512L-V/PF draws roughly 30-45 mA active, dissipating 0.10-0.15 W. The 100-pin TQFP has theta_JA around 40-50 C/W per the Microchip thermal documentation, yielding a 5-8 C junction temperature rise at room ambient. For sealed enclosures above 80 C ambient, derate CPU duty cycle.
Use a 4-layer PCB with one solid ground plane for the 100-pin TQFP. Route the USB D+/D- pair (pins 30-31) as a 90-ohm differential with length matching within 150 mil. Keep the 12 MHz primary oscillator traces (pins 26-27) short and isolated from switching signals. Place the CTMU guarded ring around any capacitive-touch traces.
Do not leave the VBUS pin (pin 32) floating when USB is unused - tie to 3.3 V through 10 kohm. The RTCC requires a 32.768 kHz crystal on SOSC1/SOSC2 (pins 28-29). Brown-out Reset must be enabled in the DEVCFG configuration bits for reliable firmware boot. The CTMU needs a 1 nF 1% sample capacitor for required capacitive touch
合规信息
RoHS compliant per Microchip product page. AEC-Q100 not applicable (consumer/industrial grade). Halogen-free status not stated on product page - set unknown. Conflict-minerals compliance per Microchip policy.
